As of my last knowledge update in October 2021, there isn't any widely recognized figure or concept by the name "Nikolai Ardelyan." It's possible that you are referring to a lesser-known individual or a character from a specific work of fiction, or it could be a recent development that emerged after my last update.

The short circuit ratio (SCR) of a synchronous generator is a key parameter that offers insight into the machine's ability to handle short-circuit conditions. It is defined as the ratio of the field current required to produce rated voltage (at rated speed and frequency) to the field current required to produce the same terminal voltage under short-circuit conditions.

Squegging is a term that has emerged to describe the practice of using a squeeze ball or "squegg," which is a small, portable, and often stress-relieving device. While the specific attributes and uses of "Squegging" may vary, it generally pertains to utilizing these types of tools for physical exercise, stress relief, or rehabilitation purposes. It's important to note that concepts and trends can evolve quickly, so definitions may vary based on context.

After-rust is a term that is often used in the context of certain forms of art and design, particularly referring to a creative movement or aesthetic focus that deals with the themes of decay and the transformative qualities of materials. It's not a universally defined term, but similar concepts can be found in contemporary art and design.

Amalgamated Zinc, often referred to simply as Amalgamated Zinc Ltd (AZL), was a major mining company in Australia, primarily known for its production of zinc and lead. The company was involved in various mining operations, including the mining, smelting, and refining of zinc and lead ores.

An anion-exchange membrane is a type of semi-permeable membrane that is designed to selectively allow anions (negatively charged ions) to pass through while blocking cations (positively charged ions). These membranes are typically composed of polymer materials that are chemically modified to contain positively charged functional groups, which attract and hold anions in the surrounding solution.

An antimony electrode is an electrochemical sensor typically used for measuring the concentration of specific ions, particularly in the field of analytical chemistry. It is commonly utilized in conjunction with ion-selective electrodes (ISEs) and potentiometric measurements. ### Characteristics 1. **Material Composition**: The electrode is made from antimony, a semimetal that exhibits specific electrochemical properties.

The Betts electrolytic process, also known as the Betts method, is an electrolytic refining process used primarily for the extraction and purification of lead. It was developed by the American engineer, chemist, and inventor William Betts in the early 20th century.

A carbon paste electrode (CPE) is an electrochemical sensor that is widely used in various applications, including analytical chemistry, electrochemical studies, and environmental monitoring. It is made by mixing a carbon-based material, typically powdered graphite or graphite particles, with a suitable binder (such as a polymer or oil) to form a paste. This paste is then applied to a conductive substrate, often a metal rod or electrode, to form the working surface of the electrode.

The Castner process, also known as the Castner method, is an industrial chemical process used to produce sodium hydroxide (NaOH) from sodium carbonate (Na2CO3) using sodium metal and water. The process involves the following key steps: 1. **Sodium Carbonate Reduction**: The process begins with the reduction of sodium carbonate by sodium metal. This typically occurs at high temperatures.

Caustic embrittlement is a type of material degradation that occurs in metals, particularly in steel, due to exposure to high pH alkaline environments, often involving caustic substances like sodium hydroxide (NaOH). This phenomenon is especially relevant in the context of boiler systems and other industrial equipment where caustic materials might be present.

Cell notation, also known as electrochemical cell notation or shorthand notation, is a way to represent an electrochemical cell, including its components and processes, in a standardized format. It provides a concise and systematic way to describe the different parts of an electrochemical cell, such as the anode, cathode, and the electrolyte involved in the reaction.

A cellulose electrode is a type of electrode that is made primarily from cellulose, a natural polymer found in the cell walls of plants. Cellulose is abundant, biodegradable, and non-toxic, making it an attractive material for various applications in electrochemistry and environmental science. Cellulose electrodes can be used in different contexts, such as: 1. **Sensors:** Cellulose electrodes can be developed for use in biological or chemical sensors, where they can help detect specific substances or changes in the environment.